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Simplify equation for alpha #7

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Simplify equation for alpha #7

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11 changes: 1 addition & 10 deletions disparity.py
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Original file line number Diff line number Diff line change
Expand Up @@ -31,20 +31,11 @@ def get_nes (graph, label):
return set([node_id]).union(set([id for id in graph.neighbors(node_id)]))


def disparity_integral (x, k):
"""
calculate the definite integral for the PDF in the disparity filter
"""
assert x != 1.0, "x == 1.0"
assert k != 1.0, "k == 1.0"
return ((1.0 - x)**k) / ((k - 1.0) * (x - 1.0))


def get_disparity_significance (norm_weight, degree):
"""
calculate the significance (alpha) for the disparity filter
"""
return 1.0 - ((degree - 1.0) * (disparity_integral(norm_weight, degree) - disparity_integral(0.0, degree)))
return (1.0 - norm_weight)**(degree - 1.0)


def disparity_filter (graph):
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